Piezotronic Interface Engineering on ZnO/Au-Based Schottky Junction for Enhanced Photoresponse of a Flexible Self-Powered UV Detector

被引：108

作者：

Lu, Shengnan ^{[1
]}

Qi, Junjie ^{[1
]}

Liu, Shuo ^{[1
]}

Zhang, Zheng ^{[1
]}

Wang, Zengze ^{[1
]}

Lin, Pei ^{[2
]}

Liao, Qingliang ^{[1
]}

Liang, Qijie ^{[1
]}

Zhang, Yue ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 16期

关键词：

interface engineering piezopotential; Schottky barrier; ZnO; self-powered; UV detector; PHOTODETECTORS; PERFORMANCE; PHOTOSENSOR; SENSITIVITY; EFFICIENCY;

D O I：

10.1021/am503442c

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Exploiting piezoelectric effect to engineer material interface has been confirmed as a promising way to optimize the performance of optoelectronic devices. Here, by using this effect, we have greatly improved the photoresponse of the fabricated ZnO/Au Schottky junction based self-powered UV detector. A 440% augment of photocurrent, together with 5x increased sensitivity, was obtained when the device was subjected to a 0.580% tensile strain. The enhancement can be attributed to the facility separation and extraction of photoexcites due to the formation of the stronger and expanding built-in field, which is a result of charge redistribution induced by piezoelectric polarization at the ZnO/Au interface. This study not only can strengthen the understanding of piezoelectric effects on energy devices but also can be extended to boost performances of optoelectronic devices made of piezoelectric semiconductor materials.

引用

页码：14116 / 14122

页数：7

共 42 条

[41] Scanning Probe Study on the Piezotronic Effect in ZnO Nanomaterials and Nanodevices [J].

Zhang, Yue ;

Yan, Xiaoqin ;

Yang, Ya ;

Huang, Yunhua ;

Liao, Qingliang ;

Qi, Junjie .

ADVANCED MATERIALS, 2012, 24 (34) :4647-4655

[42] Interface Physics in Complex Oxide Heterostructures [J].

Zubko, Pavlo ;

Gariglio, Stefano ;

Gabay, Marc ;

Ghosez, Philippe ;

Triscone, Jean-Marc .

ANNUAL REVIEW OF CONDENSED MATTER PHYSICS, VOL 2, 2011, 2 :141-165

← 1 2 3 4 5 →